FREE AND STUDY GAMES ABOUT MICRO CH.9 P KC

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EXAM QUESTIONS

Actual Qs and Ans Expert-Verified Explanation

This Exam contains:

-Guarantee passing score -67 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation

Question 1: Ethylene oxide is ________.

sporicidal only effective with high heat the active agent in household bleach used as an antiseptic against anaerobes a halogen

Answer:

sporicidal Question 2: 33. The process that destroys or removes all microorganisms and microbial forms including bacterial endospores on inanimate objects is ______.disinfection sterilization antisepsis sanitization degermation

Answer:

sterilization

Question 3: Each of the following is the target of antimicrobial agents except ______.cell walls cell membranes ribosomes cellular proteins cytoplasm

Answer:

cytoplasm Question 4: 16. The compound that is an organic base containing chlorine and two phenolic rings, and is used increasingly for mucous membrane irrigation, obstetrical washes, hand scrubbing, and prepping surgical skin sites is ______.carbolic acid chlorhexidine triclosan.formalin quarternary ammonium compounds

Answer:

chlorhexidine

Question 5: 9. Surfactants work by ________.

Answer:

disrupting membrane integrity

Question 6: 22. Discuss the characteristic of dry heat

Answer:

it takes up to 4 hours to sterilize instruments in a hot air oven, whereas the Bunsen burner will incinerate an inoculation loop almost immediately

the Bunsen burner can achieve temperatures up to 1,870 degrees C, Whereas the hot-air oven reaches temperatures up to 180 degrees C.

Question 7: 39. Microbial death occurs when there is ________.

no movement permanent loss of reproduction a change in appearance a decrease in size All of these occur

Answer:

permanent loss of reproduction Question 8: 48. Which of the following is not a factor that affects germicidal activity?The material being treated The length of exposure The strength of the germicide The microorganism being treated All of these choices are factors.

Answer:

All of these choices are factors Question 9: All of the following disrupt the cytoplasmic membrane except ________.detergents quaternary ammonium compounds high concentration phenols iodine

Answer:

iodine Question 10: 32. Which of the following microbial forms have the highest resistance to physical and chemical controls?Naked viruses Protozoan cysts Fungal spores Bacterial endospores Yeast

Answer:

Bacterial endospores

Question 11: 44. Sterilization is achieved by ________.

flash pasteurization hot water boiling water steam autoclave All of the choices are correct

Answer:

steam autoclave

Question 12: 36. The easiest microbial forms to kill or inhibit are ________.

prions vegetative bacteria and fungi endospores protozoan cysts mycobacteria and staphylococci

Answer:

vegetative bacteria and fungi

Question 13: Which of the following does not affect microbial nucleic acids?

Moist heat Ultraviolet light X rays Ethylene dioxide Formaldehyde

Answer:

Moist heat Question 14: 26. The use of aldehydes as antimicrobial agents is limited due to ________.

Answer:

their instability when pH or temperature is increased Question 15: Which of the following forms of radiation is in order from the most penetrating to the least penetrating?Gamma, cathode, X rays Gamma, X rays, cathode Cathode, gamma, X ray Cathode, X ray, gamma X ray, gamma, cathode

Answer:

Gamma, X rays, cathode